| Chain | GOid | namespace | contents |
| x | 0000166 | molecular_function | nucleotide binding |
| x | 0000349 | biological_process | generation of catalytic spliceosome for first transesterification step |
| x | 0000398 | biological_process | mRNA splicing, via spliceosome |
| x | 0003676 | molecular_function | nucleic acid binding |
| x | 0003723 | molecular_function | RNA binding |
| x | 0003724 | molecular_function | RNA helicase activity |
| x | 0004386 | molecular_function | helicase activity |
| x | 0005515 | molecular_function | protein binding |
| x | 0005524 | molecular_function | ATP binding |
| x | 0005634 | cellular_component | nucleus |
| x | 0006397 | biological_process | mRNA processing |
| x | 0008186 | molecular_function | ATP-dependent activity, acting on RNA |
| x | 0008380 | biological_process | RNA splicing |
| x | 0016787 | molecular_function | hydrolase activity |
| x | 0016887 | molecular_function | ATP hydrolysis activity |
| x | 0022613 | biological_process | ribonucleoprotein complex biogenesis |
| x | 0034247 | biological_process | snoRNA splicing |
| x | 0071006 | cellular_component | U2-type catalytic step 1 spliceosome |
| x | 0071826 | biological_process | protein-RNA complex organization |
| y | 0000398 | biological_process | mRNA splicing, via spliceosome |
| y | 0001671 | molecular_function | ATPase activator activity |
| y | 0003676 | molecular_function | nucleic acid binding |
| y | 0005634 | cellular_component | nucleus |
| y | 0005681 | cellular_component | spliceosomal complex |
| y | 0005737 | cellular_component | cytoplasm |
| y | 0006397 | biological_process | mRNA processing |
| y | 0008380 | biological_process | RNA splicing |